The aim of the game is to remove all pieces by jumping on them. Use keyboard arrows to jump up, down, left and right. Hold down 'ctrl' key to make a bigger (2 units) jump. Press 'space' to restart level anytime, 14 levels to play. Tilox is a clone of an old dos game called 'Hock', from ButcherSoft 1992. I found a nice javascript version of the game made by Lutz Tautenhahn.